A novel core-shell nanocomposite electrolyte for low temperature fuel cells
2012 (English)In: Journal of Power Sources, ISSN 0378-7753, Vol. 201, 164-168 p.Article in journal (Refereed) Published
We report a rapid and cost-effective method to coat SDC nano-particles with a thin LiZn-oxide nanocomposite layer. This composite is determined to have a structure with two phases consisting of Li2O and ZnO and examined to distribute over the surfaces of SDC nano-particles uniformly by using energy dispersive X-ray (EDX) and high-resolution TEM (HRTEM). The measurments of electrical property demonstrate that such a thin layer enables the ionic conductivity of SDC to be significantly increased (higher than 0.1 S cm(-1) at the temperature of 300 degrees C) equivalent to the conductivity of pure SDC at 800 degrees C or YSZ at 1000 degrees C. This superionic conductivity is caused by the two-phase interfaces formed between nano-particles.
Place, publisher, year, edition, pages
2012. Vol. 201, 164-168 p.
SDC core-shell nanocomposite, Electrolyte, Low temperature fuel cells, Ionic conductivity
IdentifiersURN: urn:nbn:se:kth:diva-91610DOI: 10.1016/j.jpowsour.2011.10.084ISI: 000300264400022ScopusID: 2-s2.0-83655201182OAI: oai:DiVA.org:kth-91610DiVA: diva2:512939
QC 201203292012-03-292012-03-192012-03-29Bibliographically approved